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Tendon microtears in an animal model of epicondylitis caused by cyclical loading.

Authors
Rempel-DM; Nakama-LH; Barr-A
Source
Trans Annu Meet Orthop Res Soc 2004 Mar; 50:0856
NIOSHTIC No.
20033288
Abstract
Epicondylitis is a tendon disorder that can occur among athletes and workers who performing repetitive and forceful hand motions. Although it is associated with a high level of disability, the mechanisms of injury are not completely understood. It is commonly assumed that microtears are the initiating event of tendon injury, and microtears have been observed in tendon biopsies and sonograms from patients with overuse injuries. However, the size and distribution of microtears, and their relationship to loading are not well characterized. Knowledge of these factors may be useful in developing primary and secondary preventive measures. Our laboratory has developed an in vivo rabbit model of epicondylits that involves repetitive loading of the flexor digitorum profundus (FDP) muscle. The purpose of this study was to determine whether the size and density of microtears in the FDP tendon were different in a limb exposed to repetitive finger loading in comparison to a control limb.
Keywords
In-vivo-studies; Injuries; Laboratory-animals; Animal-studies; Muscles; Repetitive-work; Cumulative-trauma-disorders; Cumulative-trauma; Musculoskeletal-system; Musculoskeletal-system-disorders; Biomechanics; Laboratory-animals; Models
Contact
University of California, 1301 South 46th Street. Building 163, Richmond, CA 94804
Publication Date
20040301
Document Type
Abstract; Conference/Symposia Proceedings
Funding Type
Grant
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-007359
ISSN
0149-6433
Priority Area
Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
Source Name
Transactions of the Annual Meeting of the Orthopaedic Research Society
State
CA
Performing Organization
University of California - San Francisco
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